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Volume 14
Issue 2
10.3390/met14020164
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Article

Effect of Kaolin/TiO2 Additions and Contact Temperature on the Interaction between DD6 Alloys and Al2O3 Shells

by
Guangyao Chen
1,2,
Zheyu Cai
1,
Man Zhang
1,
Yu Liu
1,
Qisheng Feng
1,
Pengyue Gao
1,
Xinmei Hou
3,
Xiaoyan Chen
4,*,
Fei Li
4,* and
Chonghe Li
1,2,*
1
State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
2
Zhejiang Institute of Advanced Materials, Shanghai University, Jiaxing 314100, China
3
Beijing Advanced Innovation Center for Materials Genome Engineering, Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, China
4
Shanghai Key Laboratory for High Temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
*
Authors to whom correspondence should be addressed.
Metals 2024, 14(2), 164; https://doi.org/10.3390/met14020164
Submission received: 22 December 2023 / Revised: 26 January 2024 / Accepted: 26 January 2024 / Published: 29 January 2024
(This article belongs to the Section Crystallography and Applications of Metallic Materials)
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Abstract

In this study, the effects of kaolin and TiO2 additions on the interaction between DD6 alloys and Al2O3 shells were investigated at 1550 and 1600 °C, respectively. Through the use of optical microscopy and scanning electron microscopy, the phase composition and microstructure of the shells and the alloys were studied, and the interaction mechanism was clarified. The results indicate that the shells adding kaolin and TiO2 had a relatively weak interaction with the alloys at 1550 °C, and no significant sand adhesion could be observed. As the contact temperature was increased to 1600 °C, the alloy melt could permeate into the shells, resulting in the generation of a thick sand adhesion layer. The thicknesses of the attached layers in the alloys, which contacted the shell with kaolin and TiO2, were 120 and 220 μm, respectively. No significant chemical products could be detected in the interaction layer, meaning that only physical dissolution of the shell refractory occurred. This study provides an experimental foundation for improving shell performance and offers valuable references for further research in related fields.
Keywords: DD6 alloy; Al2O3 shell; additions; contact temperature; interaction DD6 alloy; Al2O3 shell; additions; contact temperature; interaction

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MDPI and ACS Style

Chen, G.; Cai, Z.; Zhang, M.; Liu, Y.; Feng, Q.; Gao, P.; Hou, X.; Chen, X.; Li, F.; Li, C. Effect of Kaolin/TiO2 Additions and Contact Temperature on the Interaction between DD6 Alloys and Al2O3 Shells. Metals 2024, 14, 164. https://doi.org/10.3390/met14020164

AMA Style

Chen G, Cai Z, Zhang M, Liu Y, Feng Q, Gao P, Hou X, Chen X, Li F, Li C. Effect of Kaolin/TiO2 Additions and Contact Temperature on the Interaction between DD6 Alloys and Al2O3 Shells. Metals. 2024; 14(2):164. https://doi.org/10.3390/met14020164

Chicago/Turabian Style

Chen, Guangyao, Zheyu Cai, Man Zhang, Yu Liu, Qisheng Feng, Pengyue Gao, Xinmei Hou, Xiaoyan Chen, Fei Li, and Chonghe Li. 2024. "Effect of Kaolin/TiO2 Additions and Contact Temperature on the Interaction between DD6 Alloys and Al2O3 Shells" Metals 14, no. 2: 164. https://doi.org/10.3390/met14020164

APA Style

Chen, G., Cai, Z., Zhang, M., Liu, Y., Feng, Q., Gao, P., Hou, X., Chen, X., Li, F., & Li, C. (2024). Effect of Kaolin/TiO2 Additions and Contact Temperature on the Interaction between DD6 Alloys and Al2O3 Shells. Metals, 14(2), 164. https://doi.org/10.3390/met14020164

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